As the times are changing, you don't hear as many sample issues with rap artists. Part of that has to do with production styles these days, but the nature of copyright is also changing as the internet becomes more of a giant.
Girl TalkI sampled a bit of stuff from my dad's collection. He has probably a bigger record collection than I do. I try to buy as much as possible, because I've never been able to keep an MP3 collection organized. I like to keep my computers as clean as possible.
Girl TalkWith rap music, there are billions and billions of samples that are uncleared that people have never been bothered about on an underground level.
Girl Talk